Toddler with sleep problems. Concern?

Hi , my daughter is 4 years old. She is active and is intelligent. She has however not been able to sleep well right from when she was a child. She had digestion issues which is sorted and she poops at least once in two days if not everyday. She doesn't have allergies. Off late she has been rolling a lot in the night, almost every thirty min and doesn't seem to get enough sleep. She gets up, yawns, goes to sleep, tries to snuggle up but keeps moving through the night. It's worrying me and I'm also losing sleep cos of this. The last three days this has been very bad. She's active in the morning otherwise and no other changes. She always rolled around but it's becoming unbearable now. Is this a cause for concern? A doctor prescribed noctura for ten days which I haven't given yet. I'm worried about side effects if any. Nothing is working. Light meals, no electronics, night lamps, nothing. She used to dream a lot earlier and get up which I understand, but not anymore.